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Minarik MM30000 Series User Manual

Scr, adjustable speed drives for dc brush motors
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MM30000
Series
Model MM31640A
SCR, Adjustable Speed Drives
for DC Brush Motors

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Summary of Contents for Minarik MM30000 Series

  • Page 1 MM30000 Series Model MM31640A SCR, Adjustable Speed Drives for DC Brush Motors...
  • Page 2 Minarik Corporation All rights reserved. No part of this manual may be reproduced or transmitted in any form without written permission from Minarik Corporation. The information and technical data in this manual are subject to change without notice. Minarik Corporation and its...
  • Page 3 Follow sound maintenance procedures. It is possible for a drive to run at full speed as a result of a component failure. Minarik strongly recommends the installation of a master switch in the main power input to stop the drive in an emergency.

  • Page 4: Table Of Contents

    Contents Specifications Dimensions Installation Mounting ..........3 Wiring .
  • Page 5 Contents TORQUE LIMIT (TORQUE) ......23 Application Notes Reversing with dynamic braking ......25 Reversing with a DLC600 .
  • Page 6 Illustrations Figure 1. Dimensions ........2 Figure 2.

  • Page 7: Specifications

    Specifications Max. Max. Max. Input Input Armature Voltage Current Current Model (AC) (Amps AC) (Amps DC) Style MM31640A Chassis AC Line Voltage Tolerance ±10%, 50/60 Hz, single phase Armature Voltage 0 – 90 VDC Analog Input Voltage Range (signal must be isolated; S1 to S2) 0 –...

  • Page 8: Dimensions

    Dimensions Figure 1. Dimensions...

  • Page 9: Installation

    Installation Mounting Warning Do not install, rewire, or remove this control with power applied. Doing so may cause fire or serious injury. Make sure you have read and understood the Safety Warnings before attempting installation. The chassis must be earth grounded. Use a star washer beneath the head of at least one of the mounting screws to penetrate the anodized chassis surface and to reach bare metal.

  • Page 10: Wiring

    Installation Wiring Warning Do not install, remove, or rewire this equipment with power applied. Failure to heed this warning may result in fire, explosion, or serious injury. Circuit potentials are at 115 VAC above ground. To prevent the risk of injury or fatality, avoid direct contact with the printed circuit board or with circuit elements.

  • Page 11: Shielding Guidelines

    As a general rule, Minarik recommends shielding of all conductors. If it is not practical to shield power conductors, Minarik recommends shielding all logic-level leads. If shielding logic leads is not practical, the user should twist all logic leads with themselves to minimize induced noise.

  • Page 12: Heat Sinking

    The fuse size may be reduced to 1.5A if this control is used with motors smaller than 1/8 HP. Fuse kit 050-0066 (1 - 5A Fuse Kit) is available from Minarik. See Replacement Parts (page 39) for fuse kit contents.

  • Page 13: Speed Adjust Potentiometer Connections

    Installation Speed adjust potentiometer connections Warning Be sure that the potentiometer tabs do not make contact with the potentiometer enclosure. Grounding the input will cause damage to the drive. Install the circular insulating disk between the mounting panel and the 10K ohm speed adjust potentiometer (see Figure 2). Mount the speed adjust potentiometer through a 0.38-inch (10 mm) hole with the hardware provided.

  • Page 14: Quick-Connect Terminal Block

    Quick-connect terminal block The quick-connect terminal block is composed of a header block and terminal plug. The removable terminal plug, Minarik part number 160-0098, connects to the header block as shown in Figure 3. To use the quick-connect terminal block: 1.

  • Page 15: Connections

    Figure 6 (page 12). Motor connections Minarik drives supply motor voltage from A1 and A2 terminals. It is assumed throughout this manual that, when A1 is positive with respect to A2 , the motor will rotate clockwise (CW) while looking at the output shaft protruding from the front of the motor.

  • Page 16: Power Connections

    Installation Power connections Connect the AC line power leads to SO501 terminals L1 and L2, or to a double-throw, single-pole master power switch as shown in Figure 4 (recommended). Figure 4. Power and Motor Connections...

  • Page 17: Signal And Optional Switch Connections

    Installation Signal and optional switch connections Speed adjust potentiometer Connect the speed adjust potentiometer to terminals S1, S2 and S3 of connector SO501 as shown in Figure 5. The CW terminal must be connected to S3. Inhibit switch Connect a single-pole, single-throw switch to the H1 and H2/A2 terminals of SO501 (Figure 5).

  • Page 18: Figure 6. Voltage Follower Connections

    (+) to S2. Connect the signal common (–) to S1. Make no connection to S3. A potentiometer can be used to scale the analog input voltage. An interface device, such as Minarik model PCM4, may be used to scale and isolate an analog input voltage. Figure 6. Voltage Follower Connections...

  • Page 19: Operation

    Operation Warning Dangerous voltages exist on the drive when it is powered. BE ALERT. High voltages can cause serious or fatal injury. Before applying power • Verify that no conductive material is present on the printed circuit board. • Verify that the AC supply is properly balanced. Drive startup and shutdown 1.

  • Page 20: To Shut Down The Drive

    Removing AC line power (both L1 and L2) is the only acceptable method for emergency stopping. Minarik strongly recommends the installation of an emergency stop switch for chassis drives. The switch contacts should be rated at a minimum of 250 volts and...

  • Page 21: Line Starting And Stopping

    Operation Line starting and stopping When AC line voltage is applied to the drive, the motor accelerates to the set speed. When AC line voltage is removed, the motor coasts to a stop. Line stopping (removing AC line voltage) is recommended for stopping in emergency situations only.

  • Page 22: Coast To Minimum Speed Using Inhibit Terminals

    Operation Coast to minimum speed using INHIBIT terminals Short the INHIBIT (H1 and H2/A2) terminals of terminal board SO501 to coast the motor to minimum speed (Figure 8). Reopen the INHIBIT terminals to accelerate the motor to set speed. Twist inhibit wires and separate them from power-carrying wires or sources of electrical noise.

  • Page 23: Dynamic Braking

    Operation Dynamic braking Warning Wait for the motor to completely stop before switching it back to RUN. This will prevent high armature currents from damaging the motor or drive. NOTE: For motors rated 1/17 horsepower and lower, a brake resistor is not necessary since the armature resistance is high enough to stop the motor without demagnetization.

  • Page 24: Figure 9. Dynamic Brake Connection

    Operation Figure 9. Dynamic Brake Connection...

  • Page 25: Calibration

    Calibration Warning Dangerous voltages exist on the drive when it is powered. When possible, disconnect the voltage input from the drive before adjusting the trimpots. If the trimpots must be adjusted with power applied, use insulated tools and the appropriate personal protection equipment. BE ALERT. High voltages can cause serious or fatal injury.

  • Page 26: Figure 10. Calibration Trimpot Layout

    Calibration MAXIMUM TORQUE SPEED LIMIT MINIMUM REGULATION SPEED (IR COMP) Figure 10. Calibration Trimpot Layout...

  • Page 27: Calibration Procedure

    Calibration Calibration procedure Calibrate the drive using the following procedure: 1. Set the MIN SPD and MAX SPD trimpots to zero (full CCW). 2. Set the TORQUE trimpot to maximum (full CW). 3. Set the IR COMP trimpot to midrange (approximate 12 o’clock position).

  • Page 28: Maximum Speed (Max Spd)

    Calibration MAXIMUM SPEED (MAX SPD) The MAX SPD setting determines the motor speed when the speed adjust potentiometer is turned full CW. It is factory set for maximum rated speed. To calibrate, set the MAX SPD trimpot full CCW. Set the speed adjust potentiometer or reference voltage to maximum.

  • Page 29: Torque Limit (Torque)

    Although TORQUE LIMIT is set to 120% of maximum drive current rating, continuous operation beyond that rating may damage the motor. If you intend to operate beyond the rating, contact your Minarik representative for assistance. The TORQUE setting determines the maximum torque for accelerating and driving the motor.

  • Page 30: Figure 11. Typical Ir Comp And Torque Settings

    Calibration Set the speed potentiometer or reference signal to maximum speed. The motor should remain stopped. Slowly rotate the TORQUE trimpot clockwise (CW) until the ammeter reads 120% of maximum motor armature current. Set the speed adjust potentiometer or reference signal to zero speed.

  • Page 31: Application Notes

    Application Notes Reversing with dynamic braking A dynamic brake may be used when reversing the motor direction (Figure 12). Use a three-pole, three-position switch rated for at least the maximum DC armature voltage and maximum braking current. Wait for the motor to stop completely before switching it to either the forward or reverse direction.

  • Page 32: Reversing With A Dlc600

    DIGI-LOK is switched back to the drive. Figure 13 shows the connection of the reversing circuit to an MM30000 series drive and a DLC600. NOTE: ONLY ONE FEEDBACK SOURCE (ENCODER OR MAG PICKUP) MAY BE USED AT ANY ONE TIME.

  • Page 33: Independent Adjustable Speeds

    Application Notes Independent Adjustable Speeds Connect two speed adjust potentiometers, with a single pole two position switch to select between two independent speeds shown in the forward direction (Figure 14). The speed adjust potentiometers can be mounted at two separate operating stations.

  • Page 34: Adjustable Speeds Using Potentiometers In Series

    Application Notes Adjustable speeds using potentiometers in series Replace the speed adjust potentiometer with a single-pole, multi-position switch, and two or more potentiometers in series, with a total series resistance of 10K ohms. Figure 15 shows a connection for fixed high and low speed adjust potentiometers.

  • Page 35: Multiple Fixed Speeds

    Application Notes Multiple fixed speeds Replace the speed adjust potentiometer with series resistors with a total series resistance of 10K ohms (Figure 16). Add a single pole, multi-position switch with the correct number of positions for the desired number of fixed speeds. Figure 16.

  • Page 36: Run/Jog Switch

    Application Notes RUN/JOG switch Using a RUN/JOG switch is recommended in applications where quick stopping is not needed and frequent jogging is required. Use a single pole, two position switch for the RUN/JOG switch, and a single pole, normally closed, momentary operated pushbutton for the JOG pushbutton as shown in Figure 17.

  • Page 37: Leader-Follower Application

    Application Notes Leader-follower application In this application, use a PCM4 to monitor the speed of the leader motor (Figure 18). The PCM4 isolates the leader motor from the follower drive, and outputs a voltage proportional to the leader motor armature voltage. The follower drive uses this voltage reference to set the speed of the follower motor.

  • Page 38: Single Speed Potentiometer Control Of Multiple Drives

    Application Notes Single speed potentiometer control of multiple drives Multiple drives can be controlled with a single speed adjust potentiometer using a PCM4 at the input of each drive to provide isolation (Figure 19). Optional ratio potentiometers can be used to scale the PCM4 output voltage, allowing independent control of each drive.

  • Page 39: Troubleshooting

    • Verify that there are no short circuits or grounded connections. • Check that the drive’s rated armature outputs are consistent with the motor ratings. For additional assistance, contact your local Minarik distributor, or the factory direct: (800) 646-2745 (phone) or (800) 394-6334 (fax).

  • Page 40: Diagnostic Leds

    Troubleshooting Diagnostic LEDS MM31640A-series drives have two diagnostic LEDs mounted on the printed circuit board (see Figure 20). POWER (PWR) The green POWER LED lights when AC line voltage is applied to the drive. It is extinguished when power is removed. CURRENT LIMIT (CL) The red CURRENT LIMIT LED lights when the drive’s DC current output to the motor exceeds the limit set by the...

  • Page 41: Figure 20. Diagnostic Led Locations

    POWER LED CURRENT LIMIT LED Figure 20. Diagnostic LED Locations...
  • Page 42 Troubleshooting Symptom Possible Suggested Causes Solutions Line fuse blows 1. Line fuses are the wrong 1. Check that line fuses size. are the proper size. 2. Motor cable or armature 2. Check motor cable and is shorted to ground. armature for shorts. 3.
  • Page 43 Troubleshooting Symptom Possible Suggested Causes Solutions Line fuse does not 3. Drive is overloaded. 3. Verify that the motor is blow, but the motor not jammed. Increase does not run (cont.) TORQUE setting (page 23). 4. Drive is not receiving 4.
  • Page 44 Troubleshooting Symptom Possible Suggested Causes Solutions Motor pulsates or 1. IR COMP is set too 1. Adjust the IR COMP surges under load high. setting slightly CCW until the motor speed stabilizes (page 22). 2. Control is in current 2. Check that motor is of limit mode.

  • Page 45: Replacement Parts

    Troubleshooting Replacement Parts Replacement parts are available from Minarik Corporation and its distributors for this drive series. Table 2. Replacement Parts Model No. Symbol Description Minarik® MM31640A C503–504 22 uF, 25 VDC Capacitor 011-0046 D501–503 1N5406 Diode 071-0007 SCR501–502 S6008L3 High-power SCR...
  • Page 46 Notes...
  • Page 47 Unconditional Warranty A. Warranty Minarik Corporation (referred to as "the Corporation") warrants that its products will be free from defects in workmanship and material for twelve (12) months or 3,000 hours, whichever comes first, from date of manufacture thereof. Within this warranty period,...
  • Page 48 Other drives from Minarik Corporation: DLC600 NRGD Series MMRGD Series BOSS Series 901 East Thompson Avenue Glendale, California 91201-2011 Tel: (800) MINARIK (646-2745) Fax: (800) 394-6334 www.minarikcorp.com Document Number 250-0089, Revision 3 Printed in the U.S.A – 6/01 $12.00 North America, $13.00 Outside North America...

This manual is also suitable for:

Mm31640a

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